when I was explaining it to Professor Shiller, he said he didn't quite follow it, so I probably shouldn't try it, and he knows more than I do.

当我向席勒教授解释它的时候，他说他不能完全理解这一理论，所以我很可能不应该尝试它，他知道的比我多。

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And he says, I don't, "No one really knows where the Nile River starts."

他说，“我不，没人真的知道尼罗河的源头到底在哪里。”

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